After careful research, it was decided that the spaceship should reenter the Earth’s________.
| A．surface | B．air | C．environment | D．atmosphere |
Mr. Blake __________my letter, otherwise he would have replied by now.
| A．will not have received | B．needn’t have received |
| C．shouldn’t have received | D．couldn’t have received |
The version _______ to be closest to the author’s original now belongs to a national museum in Paris.
| A．was thought | B．thought | C．is thought | D．thinking |
There will be more than five proposals __________ at the meeting.
| A．having been discussed | B．discussing |
| C．to be discussed | D．discussed |
Whatever you do, we are always ________ your side.
| A．on | B．at | C．for | D．with |
On the wall of his office _________the paintings of early French artists.
| A．hanged | B．hanging | C．hang | D．are hanged |